What Is Molinism?
A 16th-century Jesuit attempt to split the difference between Calvinism and Arminianism.
Molinism was developed by the Spanish Jesuit theologian Luis de Molina (1535–1600) in his work Concordia (1588). Today it is championed by philosophers like William Lane Craig and Alvin Plantinga. Molinism proposes that God possesses a special type of knowledge — middle knowledge (scientia media) — through which He knows what every possible free creature would do in every possible set of circumstances. Using this knowledge, God selected the actual world that achieves His purposes while preserving libertarian free will.
The appeal of Molinism is obvious: it appears to affirm that God is fully sovereign (He chose this world) while also affirming that humans are genuinely free in the libertarian sense (their choices are not determined by God's decree). But as we will see, this apparent synthesis comes at a steep theological and philosophical price.
The Three Moments of Divine Knowledge
Both Calvinists and Molinists agree on moments 1 and 3. The dispute is over moment 2.
God's Knowledge in Molinism
Natural Knowledge (Scientia Naturalis)
God knows all necessary truths, all possibilities, all that could be. This knowledge is pre-volitional — it does not depend on God's will. Both Calvinists and Molinists affirm this.
Middle Knowledge (Scientia Media)
God knows all counterfactuals of creaturely freedom — what every possible person would freely do in every possible circumstance. This knowledge is also pre-volitional: it is given to God, not determined by Him. This is the distinctive Molinist claim, and the point of contention.
Free Knowledge (Scientia Libera)
God knows everything that will actually happen — the actual world He chose to create. This knowledge is post-volitional: it follows from God's creative decree. Both Calvinists and Molinists affirm this.
Key Differences
God Decrees, Then Knows
God's knowledge of what will happen is based on His sovereign decree. He did not look at pre-existing counterfactuals and pick the best world — He ordained the world according to the counsel of His will. Human choices are certain because God has decreed them. Humans are free in a compatibilist sense: they do what they desire, but their desires are ultimately governed by God's providence. God's sovereignty is causal, not merely selective.
God Knows, Then Selects
Before any decree, God already knew what every possible creature would freely do in every possible world. Using this middle knowledge, He selected the actual world — the combination of circumstances that achieves His goals while respecting libertarian freedom. God's sovereignty is expressed through world-selection, not through causal determination of human choices. Human choices are the ultimate source of their own determination.
Compatibilism
Freedom is the ability to act according to one's desires without external coercion. A person is free even if their desires are ultimately determined by God's providential ordering. This is the freedom affirmed in Scripture: Joseph's brothers acted freely in selling him, yet God sent him (Gen 50:20). The crucifiers acted freely, yet it was God's "definite plan" (Acts 2:23).
Libertarianism
Freedom requires the ability to do otherwise in identical circumstances. An action is free only if the agent could have chosen differently with all prior conditions being exactly the same. God cannot determine human choices — He can only arrange circumstances, knowing how agents would freely respond. This is the "power of contrary choice."
The Reformed Critique of Molinism
Four fundamental problems with middle knowledge.
The Grounding Objection: What Makes Counterfactuals True?
This is the most devastating philosophical critique. Middle knowledge requires that counterfactuals of creaturely freedom ("If Peter were in situation S, he would freely do X") are true prior to God's decree. But what makes them true? Not God — because they are pre-volitional and independent of His will. Not the creature — because the creature doesn't exist yet (we're still in the "pre-creation" logical moment). Not the circumstances — because libertarian freedom means the agent could have done otherwise in those exact circumstances.
There is nothing that grounds or explains why these counterfactuals are true rather than false. They are "brute facts" about non-existent agents making undetermined choices in hypothetical situations. This is, as Reformed philosopher Paul Helm argues, metaphysically incoherent. Truths require truthmakers — and middle knowledge has none.
God Becomes Dependent on Creatures
In Molinism, the content of God's middle knowledge is given to Him — not determined by Him. God is passive with respect to what creatures would freely do. This means God's plan for the world is constrained by the "raw material" of counterfactuals that He did not choose. He must work with whatever set of truths about free creatures happen to be true, selecting the best available world rather than decreeing the world He wants.
This compromises divine aseity — the doctrine that God is self-sufficient and depends on nothing outside Himself. If the content of God's knowledge (even in part) is determined by something external to His will, then God is not fully self-determining. As Isaiah 40:13–14 declares: "Who has directed the Spirit of the LORD, or as his counselor has instructed him? Whom did he consult?"
Scripture Presents God as the Cause, Not Merely the Selector
The Bible does not present God as one who merely arranges circumstances and watches agents respond. It presents Him as the one who actively determines outcomes — including the free choices of creatures. Consider:
Proverbs 21:1 — "The king's heart is a stream of water in the hand of the LORD; he turns it wherever he will." God does not merely know which way the king's heart would turn — He turns it. Proverbs 16:33 — "The lot is cast into the lap, but its every decision is from the LORD." Even apparently random events are determined by God. Philippians 2:13 — "God… works in you, both to will and to work for his good pleasure." God works the willing itself — not just the circumstances around the willing.
It Does Not Actually Solve the Problem It Claims to Solve
Molinism is designed to reconcile sovereignty with libertarian freedom. But it fails on both counts. On sovereignty: if God's choice of worlds is constrained by brute-fact counterfactuals, His sovereignty is reduced to "doing the best He can with the options available." It is possible that no feasible world exists in which all God's purposes are accomplished — making God's plans contingent on creaturely cooperation.
On freedom: if God creates a person knowing with certainty what they will do in every circumstance, and places them in circumstances designed to produce specific outcomes — in what meaningful sense is the creature "free"? The creature cannot do otherwise than what God foreknew and arranged. Molinism collapses into either soft determinism (which is compatibilism by another name) or genuine randomness (which is not freedom either).
What Does Scripture Actually Teach?
Scripture does not present God as selecting among available options constrained by creaturely freedom. It presents a God who "works all things according to the counsel of his will" (Eph 1:11) — not according to the counsel of counterfactuals He did not author.
God does not merely foresee the end from the beginning — He declares it. His counsel shall stand. He will accomplish all His purpose. This is the language of causal sovereignty, not world-selection from a menu of possibilities.
The key text that Molinists appeal to is 1 Samuel 23:10–13, where David asks God what Saul would do if David stayed in Keilah, and God tells him. Molinists argue this demonstrates counterfactual knowledge of free choices. But the Reformed response is straightforward: God knows counterfactuals because He knows His own decree — He knows what He would have decreed in those circumstances. This does not require a "middle" moment of knowledge independent of God's will.
Molinism is an ingenious philosophical construction, but it is a solution to a problem that Scripture does not recognize. The Bible does not struggle to reconcile sovereignty with libertarian freedom — because it never affirms libertarian freedom. Scripture affirms that God determines all things (Eph 1:11; Isa 46:10; Prov 16:33) and that humans make real, meaningful choices for which they are responsible (Gen 50:20; Acts 2:23; 4:27–28). This is compatibilism, and it requires no "middle knowledge" to make it work.
The heart of the issue is this: Molinism wants a God who is sovereign without being the ultimate cause. But Scripture presents a God who is sovereign precisely because He is the ultimate cause. "From him and through him and to him are all things" (Rom 11:36). Not some things. Not the circumstances around things. All things.
The Reformed position does not diminish human responsibility — it grounds it in divine sovereignty. And it preserves what Molinism cannot: a God who is truly self-sufficient, truly omnipotent, and truly the author and finisher of our salvation from first to last.